EP 3835734 A1 20210616 - ULTRASONIC FLOW METER
Title (en)
ULTRASONIC FLOW METER
Title (de)
ULTRASCHALLFLUSSMESSER
Title (fr)
DÉBITMÈTRE ULTRASONORE
Publication
Application
Priority
- JP 2018149814 A 20180809
- JP 2019027784 W 20190712
Abstract (en)
An ultrasonic flow meter includes measurement flow path (1) through which a fluid to be measured flows, and first ultrasonic sensor (2a) and second ultrasonic sensor (2b) that are disposed upstream and downstream in a first surface on measurement flow path (1) and are capable of transmitting and receiving an ultrasonic signal. In addition, the ultrasonic flow meter includes a flow rate calculator that detects a flow rate of the fluid to be measured based on a propagation time, the propagation time being a time period from when the first ultrasonic sensor (2a) transmits the ultrasonic signal to cause the ultrasonic signal to propagate through the fluid to be measured and be reflected on a second surface facing the first surface at least once until when the second ultrasonic sensor (2b) receives the ultrasonic signal. Measurement flow path (1) includes openings (6a, 6b) through which sound waves radiated from first ultrasonic sensor (2a) and second ultrasonic sensor (2b) enter the measurement flow path, measurement flow path (1) and openings (6a, 6b) are integrally molded, and an unnecessary sound wave suppressing portion is disposed at an edge located at least one of an upstream side and a downstream side of each of openings (6a, 6b).
IPC 8 full level
G01F 1/66 (2006.01)
CPC (source: EP US)
G01F 1/662 (2013.01 - EP US); G01F 1/667 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3835734 A1 20210616; EP 3835734 A4 20210908; CN 112543861 A 20210323; JP 2020024180 A 20200213; US 2021293593 A1 20210923; WO 2020031622 A1 20200213
DOCDB simple family (application)
EP 19848262 A 20190712; CN 201980052352 A 20190712; JP 2018149814 A 20180809; JP 2019027784 W 20190712; US 201917257673 A 20190712